Each Super Bowl halftime performance is seen by millions of people in dozens of countries -- as one of the largest stages in the world, it's a bit of a nerve-racking opportunity, and one that only a few musical artists have been given. As Bruno Mars prepares to take the Super Bowl halftime test, Billboard spoke with a handful of artists who have already been there, and passed with flying colors.

From LMFAO's Redfoo looking back at dancing with Madonna and Roger Daltrey reflecting on The Who's American invasion to Nelly reminiscing about Janet Jackson's "wardrobe malfunction," check out what these artists remember most about their Super Bowl Performances.

DESTINY'S CHILD'S MICHELLE WILLIAMS, who performed with Beyonce in 2013: Oh, the Super Bowl was beautiful. When three good girlfriends are together, you're free and you don't care who's around; you're just trying to catch up and be goofy. I had a blast. People at home watching... they don't catch the moments where, like in the 'Charlie's Angels' pose, I was smiling. We were all smiling. I was laughing with my girls. It was a beautiful thing.

LMFAO'S REDFOO, who performed alongside Madonna at 2012's halftime extravaganza: "Madonna has always been known for pulling off excellent shows. We were doing a lot of choreography in our shows as well, and I think we were ready to practice as hard as she wanted to practice and rehearse as much as she wanted to rehearse. It was very professional and I enjoyed it so much, because when you rehearse that much, there's no nerves. What you saw on the Super Bowl was probably rehearsed 100 to 150 times -- the exact movements."

U2'S THE EDGE, who helped perform an emotional set in 2002 that included a tribute to the victims of 9/11: "I can't even remember the names of the teams at this point. I remember being really up for the team that eventually won (the New England Patriots) because they were the underdogs and no one thought they had a chance, and they were amazing. I really was completely absorbed by the game. I'm not particularly knowledgable about American football but it in terms of pure drama it was pretty hard not to watch."

CARRIE UNDERWOOD, who performed the national anthem as Super Bowl XLIV in 2010: "Performing the national anthem at the Super Bowl was one of the most amazing, nerve-racking, and awesome moments of my career! Singing live a cappella in front of that many people at one time was the experience of a lifetime, and I'm so very honored to have had the opportunity."

AEROSMITH'S TOM HAMILTON, who joined the veteran rockers in playing hits like "I Don't Want To Miss a Thing" and "Walk This Way" during the Super Bowl XXXV halftime show: "It's the biggest thing there is. The whole world is watching. So when the phone rings and the guy on the other end says, 'Do you guys want to play the halftime show at the Super Bowl?', you're definitely going to pay attention."

'N SYNC's LANCE BASS, who joined Aerosmith, Britney Spears, Nelly, Mary J. Blige and the rest of the boy band during the Super Bowl XXXV halftime show in 2001: "It was very cool. When they came up with the idea of doing the Super Bowl, we were like, 'OK, we gotta do it with Aerosmith. It's a great idea.' They're one of my favorite bands in the world. We've known them for years; they're great guys."